type BSDate = {
    year: number;
    month: number;
    day: number;
};
/**
 * Formats a Bikram Sambat (BS) date into a string based on the provided format pattern.
 * Supports both English and Devanagari tokens.
 *
 * Tokens:
 * - YYYY: English Year (e.g., 2080)
 * - yyyy: Devanagari Year (e.g., २०८०)
 * - YY: English 2-digit Year (e.g., 80)
 * - yy: Devanagari 2-digit Year (e.g., ८०)
 * - MMMM: Nepali Month Name (e.g., वैशाख)
 * - MMME: Transliterated English Month Name (e.g., Baisakh)
 * - MM: English 2-digit Month (e.g., 01)
 * - mm: Devanagari 2-digit Month (e.g., ०१)
 * - M: English Month (e.g., 1)
 * - m: Devanagari Month (e.g., १)
 * - DD: English 2-digit Day (e.g., 15)
 * - dd: Devanagari 2-digit Day (e.g., १५)
 * - D: English Day (e.g., 5)
 * - d: Devanagari Day (e.g., ५)
 * - dddd: Nepali Weekday Name (e.g., शनिवार)
 * - ddd: Nepali Weekday Short Name (e.g., शनि)
 * - ddde: English Weekday Name (e.g., Saturday)
 */
export declare function formatBS(dateInput: Date | string | number | BSDate, formatStr?: string): string;
export {};